Hantavirus is a rare but deadly disease that humans catch from infected rodents, particularly Harvest and Deer mice. About 35% of the people who get the virus die from it. Hantavirus can infect anyone. Knowing about the virus and ways to prevent catching it can help protect you.
Hantavirus is an airborne disease. The infection occurs when airborne virus particles from rodent droppings are inhaled. The virus does not spread from person to person. For any questions regarding hantavirus, please contact the Vector Control Program at (858) 694-2888 or vector@sdcounty.ca.gov.
"The Airborne Menace" Hantavirus Video
"Mouse Trap" Hantavirus Video
"Open House" Hantavirus Video
2012 Hantavirus Positive Cases
| 2012 Activity |
| Number of Positive Results to Date | Date Found | Community Area | Rodent Species |
| 28 | 04/12/12 | Agua Hedionda Lagoon | North American Deer Mouse |
| 27 | 04/12/12 | Agua Hedionda Lagoon | North American Deer Mouse |
| 26 | 03/14/12 | Pala Mesa | Harvest Mouse |
| 25 | 03/24/12 | Pala Mesa | North American Deer Mouse |
| 24 | 03/14/12 | Pala Mesa | North American Deer Mouse |
| 23 | 03/14/12 | Pala Mesa | North American Deer Mouse |
| 22 | 03/14/12 | Pala Mesa | North American Deer Mouse |
| 21 | 03/14/12 | Pala Mesa | North American Deer Mouse |
| 20 | 02/29/12 | North Escondido | Northern Baja Mouse |
| 19 | 02/29/12 | North Escondido | North American Deer Mouse |
| 18 | 02/29/12 | North Escondido | North American Deer Mouse |
| 17 | 02/29/12 | North Escondido | North American Deer Mouse |
| 16 | 02/29/12 | North Escondido | North American Deer Mouse |
| 15 | 02/29/12 | North Escondido | North American Deer Mouse |
| 14 | 02/29/12 | Santee | Harvest Mouse |
| 13 | 02/28/12 | Tierrasanta | Northern Baja Mouse |
| 12 | 02/22/12 | Rancho San Diego | Northern Baja Mouse |
| 11 | 02/14/12 | Santee | Harvest Mouse |
| 10 | 02/14/12 | Santee | Harvest Mouse |
| 9 | 02/10/12 | Rose Canyon | North American Deer Mouse |
| 8 | 02/09/12 | San Marcos Landfill | North American Deer Mouse |
| 7 | 02/07/12 | Pala Mesa | California Mouse |
| 6 | 02/01/12 | Escondido | Harvest Mouse |
| 5 | 01/11/12 | Sweetwater Regional Park | Northern Baja Mouse |
| 4 | 01/05/12 | Lake Rancho Viejo | California Mouse |
| 3 | 01/05/12 | Lake Rancho Viejo | California Mouse |
| 2 | 01/05/12 | Fairbanks Country Club | Harvest Mouse |
| 1 | 01/04/12 | Mira Mesa | California Meadow Vole |
2011 Hantavirus Positive Cases(click here)
| 2011 Activity |
| Number of Positive Results to Date | Date Found | Community Area | Rodent Species |
| 53 | 12/28/11 | Carlsbad | North American Deer Mouse |
| 52 | 12/28/11 | Carlsbad | North American Deer Mouse |
| 51 | 11/30/11 | Chula Vista | North American Deer Mouse |
| 50 | 11/10/11 | San Marcos | California Meadow Vole |
| 49 | 09/28/11 | Bonsall | California Meadow Vole |
| 48 | 08/19/11 | Chula Vista | Baja Cactus Mouse |
| 47 | 08/19/11 | Chula Vista | California Meadow Vole |
| 46 | 08/19/11 | Chula Vista | California Meadow Vole |
| 45 | 07/28/11 | Chula Vista | California Meadow Vole |
| 44 | 07/28/11 | Chula Vista | North American Deer Mouse |
| 43 | 07/15/11 | Ramona | North American Deer Mouse |
| 42 | 07/15/11 | Santee | Harvest Mouse |
| 41 | 07/07/11 | Oceanside | California Meadow Vole |
| 40 | 06/23/11 | El Cajon | North American Deer Mouse |
| 39 | 06/17/11 | Campo | North American Deer Mouse |
| 38 | 06/17/11 | Campo | North American Deer Mouse |
| 37 | 06/16/11 | Escondido | North American Deer Mouse |
| 36 | 06/08/11 | Oceanside | California Meadow Vole |
| 35 | 06/08/11 | Oceanside | Harvest Mouse |
| 34 | 06/07/11 | Carlsbad | North American Deer Mouse |
| 33 | 04/28/11 | Escondido | North American Deer Mouse |
| 32 | 04/20/11 | Vista | North American Deer Mouse |
| 31 | 03/17/11 | Poway | North American Deer Mouse |
| 30 | 03/16/11 | Tierrasanta | Harvest Mouse |
| 29 | 03/10/11 | Lakeside | Northern Baja Deer Mouse |
| 28 | 03/03/11 | Tierrasanta | Harvest Mouse |
| 27 | 03/03/11 | Tierrasanta | Harvest Mouse |
| 26 | 03/03/11 | Tierrasanta | Harvest Mouse |
| 25 | 03/03/11 | Tierrasanta | California Meadow Vole |
| 24 | 03/02/11 | North Escondido | Harvest Mouse |
| 23 | 03/02/11 | West Rancho Bernardo | Harvest Mouse |
| 22 | 03/02/11 | West Rancho Bernardo | North American Deer Mouse |
| 21 | 02/24/11 | Vista | Northern Baja Deer Mouse |
| 20 | 02/24/11 | Vista | North American Deer Mouse |
| 19 | 02/24/11 | Vista | California Meadow Vole |
| 18 | 02/24/11 | Vista | California Meadow Vole |
| 17 | 02/18/11 | Rancho Peñasquitos | Harvest Mouse |
| 16 | 02/10/11 | Escondido | Harvest Mouse |
| 15 | 02/10/11 | Escondido | Harvest Mouse |
| 14 | 02/10/11 | Escondido | Harvest Mouse |
| 13 | 02/10/11 | Escondido | California Meadow Vole |
| 12 | 02/09/11 | Fairbanks Ranch | Harvest Mouse |
| 11 | 02/09/11 | Fairbanks Ranch | California Meadow Vole |
| 10 | 02/02/11 | Bonsall | North American Deer Mouse |
| 9 | 01/28/11 | Tijuana River Valley | California Meadow Vole |
| 8 | 01/28/11 | Tijuana River Valley | Harvest Mouse |
| 7 | 01/27/11 | Tijuana River Valley | Harvest Mouse |
| 6 | 01/27/11 | Tijuana River Valley | California Meadow Vole |
| 5 | 01/27/11 | Tijuana River Valley | North American Deer Mouse |
| 4 | 01/26/11 | Elfin Forest | Deer Mouse |
| 3 | 01/20/11 | Rancho Peñasquitos | Harvest Mouse |
| 2 | 01/20/11 | Rancho Peñasquitos | Harvest Mouse |
| 1 | 01/13/11 | Alpine | North American Deer Mouse |
2010 Hantavirus Positive Cases(click here)
| 2010 Activity |
| Number of Positive Cases to Date | Date Found | Community Area | Species |
| 21 | 12/08/10 | Torrey Pines | Harvest Mouse |
| 20 | 08/18/10 | Rancho Bernardo | North American Deer Mouse |
| 19 | 08/11/10 | Mt. Palomar | Brush Mouse |
| 18 | 08/04/10 | Oceanside | Harvest Mouse |
| 17 | 07/21/10 | Miramar | Harvest Mouse |
| 16 | 07/08/10 | Otay River Valley | Northern Baja Mouse |
| 15 | 06/30/10 | Fairbanks Ranch | Harvest Mouse |
| 14 | 06/29/10 | North Escondido | Harvest Mouse |
| 13 | 06/18/10 | Fairbanks Ranch | Harvest Mouse |
| 12 | 05/12/10 | Border Field State Park | Harvest Mouse |
| 11 | 04/08/10 | Bonsall | California Meadow Vole |
| 10 | 04/08/10 | Bonsall | California Meadow Vole |
| 9 | 01/13/10 | Rancho Santa Fe | North American Deer Mouse |
| 8 | 01/13/10 | Rancho Santa Fe | North American Deer Mouse |
| 7 | 01/08/10 | Rancho Peñasquitos | Harvest Mouse |
| 6 | 01/08/10 | Rancho Peñasquitos | Harvest Mouse |
| 5 | 01/08/10 | Rancho Peñasquitos | Harvest Mouse |
| 4 | 01/08/10 | Rancho Peñasquitos | Harvest Mouse |
| 3 | 01/08/10 | Rancho Peñasquitos | Harvest Mouse |
| 2 | 01/08/10 | Rancho Peñasquitos | Harvest Mouse |
| 1 | 01/07/10 | Tijuana River Valley | Harvest Mouse |
2009 Hantavirus Positive Cases(click here)
| 2009 Activity |
| Number of Positive Cases to Date | Date Found | Community Area | Species |
| 14 | 10/15/09 | San Ysidro | Northern Baja Deer Mouse |
| 13 | 10/08/09 | Imperial Beach | Harvest Mouse |
| 12 | 10/08/09 | Imperial Beach | Harvest Mouse |
| 11 | 10/08/09 | Imperial Beach | Harvest Mouse |
| 10 | 10/08/09 | Imperial Beach | Harvest Mouse |
| 9 | 10/08/09 | Imperial Beach | Harvest Mouse |
| 8 | 10/07/09 | San Ysidro | Harvest Mouse |
| 7 | 09/29/09 | Escondido | California Deer Mouse |
| 6 | 08/21/09 | Rancho Bernardo | Northern Baja Deer Mouse |
| 5 | 08/20/09 | Rancho Santa Fe | Harvest Mouse |
| 4 | 08/11/09 | Fallbrook | Harvest Mouse |
| 3 | 04/09/09 | Escondido | Harvest Mouse |
| 2 | 02/24/09
| Bonsall | Northern Baja Deer Mouse |
| 1 | 02/24/09 | Bonsall | Harvest Mouse |
2008 Hantavirus Positive Cases Map(click here)
| 2008 Activity |
| Number of Positive Cases to Date | Date Found | Community Area | Species |
| 11 | 12/09/08 | San Marcos | Harvest Mouse |
| 10 | 12/04/08 | Tijuana River Valley | Northern Baja Deer Mouse |
| 9 | 12/02/08 | Carlsbad | Northern Baja Deer Mouse |
| 8 | 11/19/08 | Chula Vista | North American Deer Mouse |
| 7 | 11/06/08 | Escondido | North American Deer Mouse |
| 6 | 11/05/08 | Rancho Penasquitos | North American Deer Mouse |
| 5 | 10/29/08 | Fallbrook | North American Deer Mouse |
| 4 | 10/13/08 | Tierrasanta | Harvest Mouse |
| 3 | 04/22/08 | Tijuana River Valley | Harvest Mouse |
| 2 | 03/17/08 | Tijuana River Valley | Harvest Mouse |
| 1 | 02/13/08 | Rancho Peñasquitos | Harvest Mouse |
Last Updated: April 12, 2012
Printable Hantavirus Brochure
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